Battery power disconnection device

Abstract

A battery power disconnect apparatus is disclosed. According to one aspect of the present invention, the battery power-off device comprises: a lower case including an installation space formed so as to be open at the upper part and a storage space formed so as to be open at the upper part; a relay mounted to the mounting space through an open upper portion of the mounting space, the relay including a fixed contact protruding upward by a predetermined height from a main body and exposed to the outside; a circuit board mounted to the receiving space through an open upper portion of the receiving space; an upper case coupled to the lower case so as to be able to cover an open upper portion of the mounting space, the upper case including an upper mounting space formed at a position corresponding to the mounting space; and an embedded busbar embedded in the upper case so that, in a state in which the upper case and the lower case are coupled to each other, the fixed contact of the relay disposed in the upper mounting space and the circuit board mounted in the housing space can be electrically connected to each other.

Description

Technical Field

[0001] The present invention relates to a battery power disconnect device. Background Art

[0002] As one of the power control components of eco-friendly cars, a battery disconnect unit (BDU) is a general term for components that connect or disconnect power between the battery and the load.

[0003] The BDU plays a crucial role alongside the DC / DC converter, high-voltage converter, OBC, and BMS that typically make up the battery system of eco-friendly vehicles. Consequently, the use of BDUs is expanding in eco-friendly vehicles using batteries.

[0004] The BDU as described above generally includes a plurality of relays such as a main relay, a pre-charging relay, a high-speed charging relay, and a low-speed charging relay to operate in various modes such as a discharge mode, a rapid charging mode, and a low-speed charging mode.

[0005] However, in the case where the existing BDU includes multiple relays, the multiple relays are installed together with the circuit board in an additional housing formed by a space in a state in which the main bodies of the multiple relays including fixed contacts and movable contacts are individually accommodated inside the frame consisting of an upper frame, a lower frame and a base plate.

[0006] Therefore, conventional BDUs need to be equipped with components for fixing the plurality of relays to the housing, and in order to operate each relay, it is necessary to electrically connect the coil terminals and connectors of each relay via cables such as wiring harnesses.

[0007] Therefore, the conventional BDU has a problem of reduced assembly efficiency due to the excessive number of components, which results in reduced work efficiency and lowered price competitiveness. Summary of the Invention

[0008] Technical problems to be solved

[0009] The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a battery power disconnect device that can simplify the electrical connection work even if it includes a plurality of relays.

[0010] Another object of the present invention is to provide a battery power disconnect device that can easily establish an electrical connection between a relay and a circuit board.

[0011] The technical problems of the present invention are not limited to the technical problems mentioned above, and ordinary technicians in the technical field to which the present invention belongs can clearly understand other technical problems not mentioned from the following description.

[0012] Technical solutions to solve problems

[0013] According to one aspect of the present invention, a battery power disconnect device is provided, which includes: a lower shell, including an installation space formed in an open upper manner and a storage space formed in an open upper manner; a relay, installed in the installation space through the open upper portion of the installation space, including a fixed contact configured to protrude from the main body to an upper portion by a predetermined height and exposed to the outside; a circuit board, installed in the storage space through the open upper portion of the storage space; an upper shell, coupled to the lower shell in a manner capable of covering the open upper portion of the installation space, and including an upper installation space formed at a position corresponding to the installation space; and an embedded busbar, embedded in the upper shell, so that when the upper shell and the lower shell are coupled to each other, the fixed contacts of the relay configured in the upper installation space and the circuit board installed in the storage space can be electrically connected.

[0014] Furthermore, the relay may include: a coil terminal protruding outward from the main body by a specified length; the circuit board may include: an external connection terminal for electrically connecting to the outside, and a first terminal connection portion, into which one end of the coil terminal can be inserted and coupled.

[0015] Furthermore, the terminal connection portion may be electrically connected to the external connection terminal through a wiring pattern formed on the circuit board, and the relay may be electrically connected to the external connection terminal and physically combined with the circuit board through a physical combination of the coil terminal and the terminal connection portion.

[0016] Furthermore, the circuit board can be a pre-charging circuit integrated printed circuit board including a pre-charging circuit and a second terminal connecting part, the pre-charging circuit is composed of a semiconductor switch and a pre-charging resistor, and the second terminal connecting part is configured to be electrically connected to the pre-charging circuit. When the upper shell and the lower shell are combined with each other, the embedded bus can electrically connect the fixed contact of the relay and the second terminal connecting part to each other.

[0017] Furthermore, the embedded busbar may include: a main body portion, which is composed of a rod-shaped member having a predetermined length, a first fastening hole, which is formed on one end side of the main body portion, and a second fastening hole, which is formed on the other end side of the main body portion; the embedded busbar may be embedded in the upper shell in such a manner that the first fastening hole and the second fastening hole are exposed to the outside.

[0018] Furthermore, the embedded busbar may further include: a first extension portion, extending upward from one end portion of the main body portion by a predetermined length; and a second extension portion, extending horizontally from the end portion of the first extension portion by a predetermined length and having the first fastening hole formed therein; one surface of the second extension portion may be in surface contact with the fixed contact of the relay.

[0019] Furthermore, the first fastening hole can be configured at a position corresponding to the upper mounting space when the upper shell and the lower shell are combined with each other, and can be combined with the fixed contact of the relay through a fixing component. The second fastening hole can be configured at a position corresponding to the storage space when the upper shell and the lower shell are combined with each other, and can be combined with the second terminal connection portion provided on the circuit board through a fixing component.

[0020] Furthermore, the circuit board may be installed in the receiving space and configured to be perpendicular to the bottom surface of the receiving space.

[0021] Furthermore, the installation space may include a plurality of installation spaces arranged along the length direction of the lower shell, i.e., the first axis direction, and formed to be divided from each other. The storage space may be divided from the plurality of installation spaces by a partition wall, and formed to be adjacent to each other along the width direction, i.e., the second axis direction.

[0022] In the above case, a plurality of relays may be individually installed in the plurality of installation spaces, and electrically connected to the circuit board via the embedded busbar.

[0023] Technical Effects

[0024] According to the above-described structure, in the battery power disconnect device according to the present invention, the electrical connection work can be simplified even if a plurality of relays are included, thereby simplifying the assembly process and improving the work productivity.

[0025] That is, in the battery power source disconnect device according to the present invention, electrical connections between a plurality of relays and other components can be simply configured while ensuring electrical energization stability, thereby improving product reliability.

[0026] Furthermore, in the battery power disconnect device according to the present invention, since the circuit board is located on the side of the relay and arranged perpendicularly to the bottom surface of the storage space, the operator can easily check the arrangement and fastening state of the relay.

[0027] Furthermore, in the battery power disconnect device according to the present invention, since the circuit board is positioned perpendicularly to the bottom surface of the storage space, obstruction of air flow within the lower housing can be minimized. Specifically, when the circuit board is positioned transversely and parallel to the bottom surface, it obstructs the flow of air inside, potentially causing the air to heat up due to rising temperatures. By positioning the circuit board perpendicularly to the bottom surface of the storage space, the present invention can fundamentally prevent or minimize this problem.

[0028] The effects of the present invention are not limited to the effects described above, but should be understood to include all effects that can be inferred from the detailed description of the present invention or the structure of the invention described in the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG. 1 is a diagram illustrating a battery power disconnect device according to an embodiment of the present invention.

[0030] Figure 2 It is from Figure 1 Figure 2 shows the main structures of the separation.

[0031] Figure 3 Observing from the other direction Figure 2 Picture.

[0032] Figure 4 yes Figure 1 Top view of .

[0033] Figure 5 It shows Figure 1 A diagram showing a state in which a portion of the upper shell is cut away along the AA direction.

[0034] Figure 6 FIG. 1 is a diagram showing a lower housing of a battery power disconnect device according to an embodiment of the present invention as viewed from above.

[0035] Figure 7 The present invention is a diagram illustrating the connection between the relay, the lower housing, and the circuit board in a battery power disconnect device according to an embodiment of the present invention. The diagram schematically shows the circuit board separated from the lower housing while the relay is mounted on the lower housing.

[0036] Figure 8 It is shown schematically Figure 7 A diagram showing the state in which the circuit board is combined with the lower housing.

[0037] Figure 9 It shows Figure 4 A diagram showing the state in which the upper shell and the lower shell are cut along the BB direction.

[0038] Figure 10 It is magnified Figure 9Figure 2 shows the “C” section of the diagram.

[0039] Figure 11 It shows Figure 10 FIG. 5 is a diagram showing a modified example of the coil terminal support portion.

[0040] Figure 12 FIG. 1 is a diagram showing an upper housing of a battery power disconnect device according to an embodiment of the present invention.

[0041] Figure 13 Observed from the bottom Figure 12 Picture.

[0042] Figure 14 This is a diagram schematically showing an embedded bus bar embedded in an upper case of a battery power disconnect device according to an embodiment of the present invention.

[0043] Figure 15 This is a diagram schematically showing the electrical connection relationship among an embedded bus bar, a circuit board, and a relay in a battery power disconnect device according to an embodiment of the present invention.

[0044] Figure 16 FIG. 1 is a diagram showing a state in which a portion of a permanent magnet holder and a permanent magnet are separated from an upper case in a battery power disconnect device according to an embodiment of the present invention.

[0045] Figure 17 FIG. 1 is a diagram showing a state in which a permanent magnet holder and a permanent magnet applicable to a battery power disconnect device according to an embodiment of the present invention are separated. DETAILED DESCRIPTION

[0046] The following describes embodiments of the present invention in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the invention. The present invention can be implemented in a variety of different forms and is not limited to the embodiments described herein. To clearly illustrate the present invention, portions of the drawings that are not relevant to the description are omitted. Throughout the specification, identical or similar components are given the same reference numerals.

[0047] The words and terms used in this specification and the appended claims should not be limited to their usual or dictionary meanings, but should be interpreted as meanings and concepts that are consistent with the technical ideas of the present invention in accordance with the principle that the inventor can define terms and concepts in order to best explain his invention.

[0048] Furthermore, the upper surface used in this specification and the appended claims may refer to a Figure 1 The lower surface can refer to the surface viewed from above. Figure 1 The surface viewed from below.

[0049] In addition, the first axis direction used in this specification and the appended claims may refer to the direction corresponding to Figures 1 to 3 The direction parallel to the x-axis shown in FIG. 1 may be a direction parallel to the x-axis shown in FIG. Figures 1 to 3 The direction parallel to the y-axis shown in FIG. 1 may be a direction parallel to the y-axis shown in FIG. Figures 1 to 3 The z-axis is shown in the direction parallel to the z-axis.

[0050] Additionally, the length direction used in this specification and the appended claims may refer to a direction parallel to the x-axis, the width direction may refer to a direction parallel to the y-axis, and the height direction may refer to a direction parallel to the z-axis.

[0051] A battery power disconnect device 100 according to one embodiment of the present invention can connect or disconnect power between a battery and a load. For example, the battery power disconnect device 100 according to one embodiment of the present invention can be applied to any vehicle equipped with a battery (not shown), such as an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or a hybrid electric vehicle (HV).

[0052] Furthermore, the battery power disconnect device 100 according to an embodiment of the present invention can also be applied to any power device equipped with a battery, such as an energy storage system (ESS).

[0053] like Figures 1 to 3 As shown, the battery power disconnect device 100 according to an embodiment of the present invention as described above may include a lower housing 110 , a relay 120 , a circuit board 130 and an upper housing 140 .

[0054] In the present invention, the relay 120 is a device that uses the principle of electromagnet to transmit mechanical drive or current signals. It may include a driving part (not shown) that includes a coil (not shown) for applying driving force, a movable contact (not shown) driven by the driving part, a fixed contact 123 that allows or disconnects power by contacting and separating with the movable contact, and a coil terminal 122 for electrically connecting to the circuit board 130. The driving part, the movable contact and a part of the fixed contact 123 can be accommodated inside the main body 121.

[0055] Furthermore, the main body 121 may include: a portion that accommodates the driving unit and the coil and allows the coil terminal 122 electrically connected to the coil to protrude to the outside by a predetermined length; and an arc chamber portion 121a that accommodates the fixed contact 123 and the movable contact.

[0056] That is, the main body 121 may include a portion that accommodates the driving part and the coil internally and forms the lower part, and an arc chamber portion 121a that accommodates a portion of the fixed contact 123 and the movable contact internally and forms the upper part, and the coil terminal 122 may be configured to protrude a specified length to the outside from the portion forming the lower part of the main body 121.

[0057] Relay 120 as described above can perform any of various functions that are generally used, such as a main relay, a high-speed charging relay, a low-speed charging relay, and the like.

[0058] The fixed contact 123 may be configured to protrude upward from the main body 121 by a predetermined height and be exposed to the outside, and the coil terminal 122 may be configured to be connected to the coil and protrude laterally from the main body 121 by a predetermined length.

[0059] Furthermore, the relay 120 may be installed in a mounting space 111 (to be described later) of the lower housing 110 such that the fixed contact 123 is located above the main body 121 .

[0060] Thus, when the relay 120 is installed in the installation space 111 , the fixed contact 123 can be electrically connected to other electrical components or elements through a bus bar or a cable such as a wiring harness, and the coil terminal 122 can also be electrically connected to an electrical component or element.

[0061] In addition, a plurality of relays 120 may be provided, and each of the plurality of relays 120a, 120b, and 120c may perform the same function as or different functions from each other.

[0062] The lower housing 110 may provide a space for separately accommodating the relay 120 and the circuit board 130 , and the relay 120 and the circuit board 130 may be inserted into the lower housing 110 along a third axis direction (z-axis direction) which is a height direction of the lower housing 110 .

[0063] In addition, when a plurality of relays 120 are provided, the lower housing 110 may separately accommodate the plurality of relays 120 a , 120 b , 120 c and the circuit board 130 .

[0064] For this reason, Figure 2 and Figure 6As shown, the lower shell 110 may include: an installation space 111, the upper part of which is open and formed along a first axis direction (x-axis direction) as a length direction; a storage space 112, the upper part of which is open and is formed to be divided from the installation space 111 by a partition wall 118 and is adjacent to the installation space 111 along a second axis direction (y-axis direction) as a width direction.

[0065] In the above case, the installation space 111 may be a space for installing the relay 120 , and the storage space 112 may be a space for installing the circuit board 130 .

[0066] That is, in the battery power disconnect device 100 according to an embodiment of the present invention, the installation space 111 for installing the relay 120 and the receiving space 112 for installing the circuit board 130 can be formed in the lower housing 110 in a manner of being divided from each other and arranged along the width direction.

[0067] At this time, the installation space 111 may include a plurality of installation spaces 111 a , 111 b , and 111 c formed in a manner of being divided from each other.

[0068] Furthermore, when the installation space 111 includes a plurality of installation spaces 111 a , 111 b , and 111 c , the plurality of installation spaces 111 a , 111 b , and 111 c may be formed in the lower housing 110 in a manner of being partitioned from one another and arranged along a length direction.

[0069] Thus, in the battery power disconnect device 100 according to one embodiment of the present invention, even though it includes a plurality of relays 120a, 120b, and 120c, each of the plurality of relays 120a, 120b, and 120c can be individually mounted in separate spaces and housed within the single-member lower housing 110. With this structure, the battery power disconnect device 100 according to one embodiment of the present invention can reduce the number of overall components and improve operational efficiency.

[0070] Furthermore, when the battery power disconnect device 100 according to one embodiment of the present invention includes a plurality of relays 120a, 120b, and 120c, when the plurality of relays 120a, 120b, and 120c are individually inserted into the mutually partitioned installation spaces 111, each relay 120 can be individually secured to the lower housing 110 without using additional securing members. With this structure, the battery power disconnect device 100 according to one embodiment of the present invention can reduce the number of components, such as securing members, used to secure the plurality of relays 120a, 120b, and 120c to the lower housing 110, thereby improving assembly efficiency.

[0071] In addition, in the battery power disconnect device 100 according to an embodiment of the present invention, since the relay 120 and the circuit board 130 installed in the lower shell 110 can be separately accommodated in the installation space 111 and the storage space 112 divided from each other along the width direction, the relay 120 and the circuit board 130 can be installed so as not to be stacked on each other in the lower shell 110 and to be respectively located in different spaces divided from each other.

[0072] Similarly, in a case where the battery power disconnect device 100 according to an embodiment of the present invention includes a plurality of relays 120a, 120b, 120c, since the plurality of relays 120a, 120b, 120c installed in the lower shell 110 can be individually accommodated in a plurality of installation spaces 111a, 111b, 111c divided from each other along the length direction, each of the plurality of relays 120a, 120b, 120c can be individually installed to the lower shell 110 or individually separated from the lower shell 110.

[0073] Therefore, in the battery power disconnect device 100 according to an embodiment of the present invention, the relay 120 and the circuit board 130 can be separately coupled to or separated from the lower housing 110 , thereby improving operational convenience.

[0074] Among them, such as Figure 6 As shown, the installation space 111 may include at least one protruding rib 116 formed to protrude upward from the bottom surface to a predetermined height.

[0075] Thus, the relay 120 installed in the installation space 111 can make line contact with the bottom surface of the installation space 111 through the protruding rib 116 .

[0076] That is, the protruding rib 116 can reduce the contact area between the relay 120 and the bottom surface of the installation space 111. Therefore, even if an error occurs in the installation space 111 for installing the relay 120, the installation space 111 can be easily modified.

[0077] In addition, the circuit board 130 may be installed in the receiving space 112 and disposed perpendicular to the bottom surface of the receiving space 112 .

[0078] That is, Figure 7 and Figure 8 As shown, the circuit board 130 can be installed in the receiving space 112 along a vertical direction.

[0079] Thus, in the battery power disconnect device 100 according to an embodiment of the present invention, as described above, the relay 120 and the circuit board 130 are not stacked on each other and are arranged adjacent to each other along the width direction of the lower shell 110, and the circuit board 130 is arranged in the storage space 112 along the vertical direction, so that the overall width of the lower shell 110 can be minimized.

[0080] In the battery power disconnect device 100 according to an embodiment of the present invention, when the relay 120 is installed in the installation space 111 and the circuit board 130 is installed in the storage space 112 , the relay 120 may be electrically connected to the external connection terminal 131 .

[0081] That is, when the relay 120 is installed in the installation space 111 , the coil terminal 122 can be directly connected to the circuit board 130 installed in the receiving space 112 to be electrically connected to the external connection terminal 131 .

[0082] Moreover, in the case where the battery power disconnect device 100 according to an embodiment of the present invention includes a plurality of relays 120a, 120b, and 120c, the plurality of relays 120a, 120b, and 120c can be electrically connected to the external connection terminals 131 respectively through direct combination of the coil terminal 122 and the circuit board 130 installed in the storage space 112 when each of the plurality of relays 120a, 120b, and 120c is individually installed in the plurality of installation spaces 111a, 111b, and 111c.

[0083] To this end, the circuit board 130 may include an external connection terminal 131 for electrical connection with the outside, and a first terminal connection portion 132 to which one end portion of the coil terminal 122 may be inserted and coupled.

[0084] In this case, the first terminal connection portion 132 may be electrically connected to the external connection terminal 131 through the wiring pattern 133 formed on the circuit board 130 .

[0085] Furthermore, when a plurality of first terminal connection portions 132 are provided, each of the plurality of first terminal connection portions 132 may be electrically connected to the external connection terminal 131 through the wiring pattern 133 .

[0086] Therefore, when the relay 120 is installed in the installation space 111 , it can be electrically connected to the external connection terminal 131 through the physical combination of the coil terminal 122 and the first terminal connection portion 132 , thereby being physically combined with the circuit board 130 .

[0087] Moreover, in the case where the battery power disconnect device 100 according to an embodiment of the present invention includes a plurality of relays 120a, 120b, 120c, the plurality of relays 120a, 120b, 120c can be electrically connected to the external connection terminal 131 respectively through the physical combination of the corresponding coil terminals 122 and the first terminal connecting portions 132, thereby being physically combined with the circuit board 130, when each of the plurality of relays 120a, 120b, 120c is individually installed in the plurality of installation spaces 111a, 111b, 111c.

[0088] Among them, such as Figure 7 and Figure 8 As shown, the coil terminal 122 may include: a first part 122a, which extends from the main body 121 along a second axis direction which is the width direction of the lower shell 110 when the relay 120 is installed in the installation space 111; and a second part 122b, which extends upward from the end of the first part 122a along a third axis direction which is the height direction of the lower shell 110, and the first terminal connecting part 132 can be combined with the second part 122b of the coil terminal 122.

[0089] Through such a structure, when the relay 120 is installed in the installation space 111, when the circuit board 130 is inserted through the open upper part of the storage space 112, the coil terminal 122 and the first terminal connection part 132 can be physically combined, and the relay 120 can be energized with the external connection terminal 131 electrically connected to the first terminal connection part 132 through the wiring pattern 133.

[0090] As an example, the external connection terminal 131 may be an external connection connector, and the external connection connector may receive a power source for driving or a control signal for controlling the relay 120 .

[0091] Thus, the relay 120 installed in the installation space 111 may receive a power source for driving or a control signal for controlling the relay 120 through the external connection terminal 131 .

[0092] Through such a structure, in the battery power disconnect device 100 according to one embodiment of the present invention, even if a plurality of relays 120a, 120b, and 120c are included, since each relay 120a, 120b, and 120c can be electrically connected to the external connection terminal 131 composed of a single component by physically and directly fastening the coil terminal 122 and the first terminal connection portion 132, the connection terminals for electrical connection with the outside can be integrated into one and used.

[0093] Thus, in the battery power disconnect device 100 according to one embodiment of the present invention, even if a plurality of relays 120a, 120b, and 120c are included, the number of connection terminals used to electrically connect each relay 120a, 120b, and 120c to the outside can be minimized, and the operation of connecting cables for electrically connecting the connection terminals can be omitted.

[0094] Although the external connection terminal 131 is described as an external connection connector, the present invention is not limited thereto. As long as electrical connection with the outside can be achieved, the external connection terminal 131 may use various known electrical components.

[0095] Furthermore, the circuit board 130 can be constructed in the form of an external connection terminal 131, the first terminal connection portion 132, and a wiring pattern 133 connecting the external connection terminal 131 and the first terminal connection portion 132, but can also be a pre-charging circuit integrated printed circuit board (PCB) that includes, in addition to the external connection terminal 131, the first terminal connection portion 132, and the wiring pattern 133, a pre-charging circuit formed by a semiconductor switch 134 and a pre-charging resistor 135, and a second terminal connection portion 136 configured to be electrically connected to the pre-charging circuit.

[0096] In addition, in the battery power disconnect device 100 according to one embodiment of the present invention, even if the coil terminal 122 protrudes from the main body 121 toward the storage space 112 when the relay 120 is installed in the installation space 111, the relay 120 can be configured to move smoothly downward through the open upper part of the installation space 111.

[0097] That is, as described above, when the relay 120 is installed in the installation space 111, when the circuit board 130 is inserted through the open upper part of the storage space 112, the coil terminal 122 protruding from the main body 121 of the relay 120 toward the storage space 112 side can smoothly combine its second part 122b with the first terminal connection part 132 of the circuit board 130 inserted into the storage space 112.

[0098] For this reason, Figure 6 As shown, the lower housing 110 may include a communication space 113 for connecting the installation space 111 and the storage space 112 adjacent to each other along the width direction. The communication space 113 may be formed in an open upper portion.

[0099] That is, the connecting space 113 can be formed as a partition wall 118 located for dividing the installation space 111 and the storage space 112 along the width direction of the lower shell 110, and can be formed by cutting a specified depth from the upper part to the lower part of the partition wall 118 in a manner with its upper part open.

[0100] Thus, when the relay 120 is inserted into the installation space 111 through the open upper portion of the installation space 111 , the coil terminal 122 protruding from the main body 121 by a predetermined length can be arranged to cross the communication space 113 .

[0101] That is, when the relay 120 is inserted into the installation space 111 , the first portion 122 a of the coil terminal 122 may be configured to be located in the communication space 113 , and the second portion 122 b may be configured to be located in the accommodation space 112 .

[0102] Thus, when the circuit board 130 is inserted into the storage space 112 with the relay 120 inserted into the installation space 111, the second part 122b configured in the storage space 112 can be smoothly inserted into the first terminal connection part 132 set on the circuit board 130 while protruding upward from the bottom surface of the storage space 112.

[0103] Among them, such as Figure 3 As shown, the relay 120 may include a plurality of corner protrusions 124 formed to protrude downwardly at lower corners of the main body 121 by a predetermined height.

[0104] When the relay 120 is inserted into the installation space 111 , the plurality of corner protrusions 124 can prevent the bottom surface of the relay 120 from making surface contact with the bottom surface of the installation space 111 .

[0105] That is, in the relay 120 installed in the installation space 111 , the bottom surface of the main body 121 may be separated from the bottom surface of the installation space 111 by the corner protrusions 124 .

[0106] Through such a structure, even if the coil terminal 122 is configured to protrude outward from the lower side of the main body 121, the possibility of the coil terminal 122 contacting the bottom surface of the installation space 111 can be cut off, thereby preventing the coil terminal 122 from being deformed by external force.

[0107] In the present invention, when the lower shell 110 includes multiple installation spaces 111a, 111b, and 111c, the connecting space 113 can be constructed to have a one-to-one correspondence with the multiple installation spaces 111a, 111b, and 111c, so that the multiple installation spaces 111a, 111b, and 111c can be connected to the storage space 112 respectively.

[0108] That is, Figure 6 As shown, the plurality of installation spaces 111 a , 111 b , and 111 c may be connected to the storage space 112 via a plurality of one-to-one corresponding communication spaces 113 a , 113 b , and 113 c .

[0109] In addition, the battery power disconnect device 100 according to an embodiment of the present invention may include a reinforcing rib 114 , thereby preventing a reduction in strength of the lower housing 110 due to the communicating space 113 even if the lower housing 110 includes the communicating space 113 .

[0110] That is, Figure 6 As shown, the lower housing 110 may include at least one reinforcing rib 114 formed to protrude upward from the bottom surface of the communication space 113 by a predetermined height.

[0111] At the same time, the reinforcing rib 114 may be formed to be located at a position that does not hinder the coil terminal 122 from entering when the coil terminal 122 is arranged in the communication space 113 .

[0112] With this structure, in the battery power disconnect device 100 according to an embodiment of the present invention, even if the lower housing 110 includes the communication space 113 , the lower housing 110 can be strengthened by the reinforcing ribs 114 , thereby improving durability against external forces.

[0113] In addition, when the relay 120 is installed in the installation space 111 and the circuit board 130 is installed in the storage space 112, in the battery power disconnect device 100 according to one embodiment of the present invention, the relay 120 can be electrically connected to the external connection terminal 131 provided on the circuit board 130 through physical contact between the coil terminal 122 and the circuit board 130.

[0114] At this time, the battery power disconnect device 100 according to one embodiment of the present invention may further include a coil terminal support portion 117, 217, which is arranged on the lower shell 110, so that the relay 120 and the external connection terminal 131 can be stably energized through the physical contact between the coil terminal 122 and the circuit board 130.

[0115] That is, the coil terminal support portion 117, 217 provided in the lower shell 110 can be configured so that when the relay 120 and the circuit board 130 are respectively installed in the installation space 111 and the storage space 112, the coil terminal support portion 117, 217 presses the coil terminal 122 or the contact portion 137 of the circuit board 130 that contacts the coil terminal 122 upward.

[0116] As an example, Figure 9 and Figure 10 As shown, the coil terminal support portion 117 can be a protrusion, which is formed to protrude upward from the bottom surface of the storage space 112 to a specified height, so that when the relay 120 is installed in the installation space 111, it can contact and support the lower surface of the coil terminal 122.

[0117] In the case as described above, as described above, the coil terminal 122 may include: a first part 122a, extending from the main body 121 along a second axis direction which is the width direction of the lower shell 110 when the relay 120 is installed in the installation space 111; and a second part 122b, extending from the end of the first part 122a toward the upper part along a third axis direction which is the height direction of the lower shell 110, and the second part 122b can be configured to be located within the storage space 112.

[0118] Furthermore, the circuit board 130 may include: an external connection terminal 131 for electrically connecting to the outside; and a first terminal connection portion 132, into which one end of the coil terminal 122 can be inserted and combined, and the first terminal connection portion 132 can be electrically connected to the external connection terminal 131 through a wiring pattern 133 formed on the circuit board 130.

[0119] With such a structure, when the relay 120 is installed in the installation space 111, when the circuit board 130 is inserted through the open upper portion of the receiving space 112, Figure 10 As shown, the second part 122b of the coil terminal 122 can be physically combined with the first terminal connecting part 132, and the coil terminal supporting part 117 formed by protruding upward from the bottom surface of the storage space 112 to a specified height can support the lower surface of the first part 122a configured on the storage space 112.

[0120] That is, when the circuit board 130 is inserted into the receiving space 112 , a tightening friction force may be generated when the second portion 122 b of the coil terminal 122 is physically combined with the first terminal connecting portion 132 , and the coil terminal may be pressed downward by the tightening friction force.

[0121] In the case described above, the coil terminal support portion 117 formed on the bottom surface of the storage space 112 supports the bottom of the coil terminal 122 by contacting the coil terminal 122 inserted into and coupled to the first terminal connecting portion 132, thereby preventing the coil terminal 122 from moving downward, and therefore, the second part 122b can be smoothly fastened to the first terminal connecting portion 132.

[0122] Through such a structure, when the relay 120 is installed in the installation space 111 and the circuit board 130 is inserted through the open upper part of the storage space 112, the coil terminal 122 can be smoothly combined with the first terminal connection part 132, and the relay 120 can be energized with the external connection terminal 131 electrically connected to the first terminal connection part 132 through the wiring pattern 133.

[0123] In addition, during the insertion of the circuit board 130, since the coil terminal support portion 117 supports the bottom of the coil terminal 122, during the combination of the first terminal connecting portion 132 and the coil terminal 122, even if an excessive load occurs in the coil terminal 122, the coil terminal 122 can be prevented from being damaged.

[0124] As another example, Figure 11 As shown, the coil terminal support portion 217 may be a protrusion formed by protruding from the bottom surface of the communication space 113 to a predetermined height.

[0125] In the case described above, the coil terminal 122 can be formed to extend from the main body 121 along the second axial direction which is the width direction of the lower shell 110 when the relay 120 is installed in the installation space 111, and the coil terminal 122 can be configured to be located in the connecting space 113.

[0126] Furthermore, the circuit board 130 may include: an external connection terminal 131 for electrically connecting to the outside; and a contact portion 137 , which protrudes by a specified length so that it can physically contact the coil terminal 122 when the circuit board 130 is installed in the storage space 112 .

[0127] In this case, the contact portion 137 may be connected to the first terminal connection portion 132 , and the first terminal connection portion 132 may be electrically connected to the external connection terminal 131 through the wiring pattern 133 formed on the circuit board 130 .

[0128] That is, the contact portion 137 may protrude by a predetermined length so that when one end thereof is engaged with the first terminal connection portion 132 of the circuit board 130 , the other end thereof is located in the communication space 113 .

[0129] The contact portion 137 may be detachably coupled to the first terminal connection portion 132 , or may be formed integrally with the first terminal connection portion 132 . The contact portion 137 may also be directly electrically connected to the external connection terminal 131 through the wiring pattern 133 .

[0130] In the above-mentioned case, when the relay 120 is installed in the installation space 111 and the circuit board 130 is installed in the receiving space 112, Figure 11 As shown, the contact portion 137 and the coil terminal 122 can be configured so that a portion of the length of one end portion overlaps with each other in the connecting space 113, and the coil terminal support portion 217 formed by protruding upward from the bottom surface of the connecting space 113 to a specified height can support the lower portion of a portion of the contact portion 137 and a portion of the coil terminal 122 that overlap with each other in the connecting space 113.

[0131] Thus, when the circuit board 130 is inserted into the storage space 112 and one end of the contact portion 137 is supported by the coil terminal support portion 217, when the relay 120 is inserted into the installation space 111 in a manner such that one end of the coil terminal 122 partially overlaps with the end side of the contact portion 137, a portion of the contact portion 137 and a portion of the coil terminal 122 that overlap with each other in the connecting space 113 can both be supported upward by the coil terminal support portion 217.

[0132] Similarly, when the relay 120 is inserted into the installation space 111 and one end of the coil terminal 122 is supported by the coil terminal support portion 217, when the circuit board 130 is inserted into the storage space 112 in a manner such that one end of the contact portion 137 partially overlaps with the end side of the coil terminal 122, a portion of the contact portion 137 and a portion of the coil terminal 122 that overlap with each other in the connecting space 113 can both be supported upward by the coil terminal support portion 217.

[0133] Thus, since a portion of the contact portion 137 and a portion of the coil terminal 122 that overlap with each other in the connecting space 113 can be kept in contact with each other through the coil terminal support portion 217, the relay 120 can be stably energized with the external connection terminal 131 through the contact between the coil terminal 122 and the contact portion 137.

[0134] The upper case 140 may be coupled to the lower case 110 in such a manner as to cover the opened upper portion of the lower case 110 .

[0135] For example, the upper housing 140 may be coupled to the lower housing 110 so as to cover both the opened upper portion of the installation space 111 and the opened upper portion of the receiving space 112 .

[0136] Furthermore, when the lower shell 110 includes multiple installation spaces 111a, 111b, and 111c, the upper shell 140 can be combined to the lower shell 110 in a manner that can cover the open upper portion of each of the multiple installation spaces 111a, 111b, and 111c and the open upper portion of the storage space 112.

[0137] In the case described above, if Figure 1 As shown, the upper housing 140 may be coupled to the lower housing 110 in a manner of covering an upper portion of the receiving space 112 and exposing the external connection terminals 131 provided on the circuit board 130 to the outside.

[0138] Thus, when the circuit board 130 is installed in the receiving space 112 , even if the upper housing 140 is fastened to the lower housing 110 , the external connection terminals 131 can be exposed to the outside to smoothly connect to a battery or other loads.

[0139] At this time, the upper housing 140 may be detachably coupled to the lower housing 110 .

[0140] To this end, the lower shell 110 may include a plurality of protrusions 115 protruding outward along the circumferential direction, and the upper shell 140 may include a clamping member 141, which is arranged at positions corresponding to the plurality of protrusions 115 respectively so that the protrusions 115 can be detachably inserted into the clamping member 141.

[0141] With this structure, the upper housing 140 and the lower housing 110 may be detachably coupled via the protrusions 115 and the clamping members 141 corresponding to each other.

[0142] However, the coupling method of the upper housing 140 and the lower housing 110 is not limited thereto, and various known coupling methods may be applied as long as they can be detachably coupled.

[0143] At this time, in the battery power disconnect device 100 according to an embodiment of the present invention, the relay 120 can be installed in the installation space 111 of the lower shell 110 in such a way that the fixed contact 123 is located on the upper part of the main body 121, and the fixed contact 123 can be electrically connected to the circuit board 130 installed in the storage space 112 through the upper shell 140.

[0144] That is, when the upper shell 140 and the lower shell 110 are combined with each other when the relay 120 is installed in the installation space 111 and the circuit board 130 is installed in the storage space 112, the fixed contact 123 of the relay 120 and the circuit board 130 can be electrically connected to each other through the upper shell 140.

[0145] For this reason, Figures 12 to 14 As shown, the battery power disconnect device 100 according to an embodiment of the present invention may include an embedded bus bar 150 embedded in the upper housing.

[0146] When the upper housing 140 and the lower housing 110 are combined with each other in a state where the relay 120 is installed in the installation space 111 and the circuit board 130 is installed in the receiving space 112, Figure 15 As shown, the embedded busbar 150 as described above can electrically connect the fixed contact 123 of the relay 120 and the circuit board 130 to each other.

[0147] In which, the circuit board 130 can be a pre-charging circuit integrated PCB that, together with the above-mentioned external connection terminal 131, wiring pattern 133 and first terminal connection part 132, includes a pre-charging circuit composed of a semiconductor switch 134 and a pre-charging resistor 135, and a second terminal connection part 136 arranged on the circuit board 130 and electrically connected to the pre-charging circuit.

[0148] In this case, when the upper case 140 and the lower case 110 are coupled to each other, the embedded bus bar 150 may electrically connect the fixed contact 123 of the relay 120 and the second terminal connection portion 136 to each other.

[0149] As an example, Figure 14As shown, the embedded busbar 150 may include: a main body portion 151, which is composed of a rod-shaped member with a predetermined length; a first fastening hole 152, which is formed on one end side of the main body portion 151; and a second fastening hole 153, which is formed on the other end side of the main body portion 151.

[0150] And, as Figure 4 and Figure 12 As shown, the embedded busbar 150 may be embedded in the upper housing 140 in a manner such that the first fastening holes 152 and the second fastening holes 153 are exposed to the outside.

[0151] In addition, when the upper shell 140 and the lower shell 110 are combined with each other, one end of the embedded bus 150 including the first fastening hole 152 can be configured to be exposed to the outside at a position corresponding to the installation space 111, and the other end including the second fastening hole 153 can be configured to be exposed to the outside at a position corresponding to the storage space 112.

[0152] Thus, when the upper shell 140 and the lower shell 110 are combined with each other in a state where the relay 120 is installed in the installation space 111 and the circuit board 130 is installed in the storage space 112, one end of the embedded bus 150 including the first fastening hole 152 can contact the fixed contact 123 of the relay 120, and the other end including the second fastening hole 153 can contact the second terminal connection part 136 of the circuit board 130.

[0153] In the case described above, if Figure 15 As shown, the end of the embedded busbar 150 including the second fastening hole 153 can be coupled to the second terminal connection portion 136 via a fixing member 180. With this structure, the embedded busbar 150 can stably be electrically connected to the second terminal connection portion 136 of the circuit board 130.

[0154] Similarly, the end of the embedded busbar 150 including the first fastening hole 152 can be coupled to the fixed contact 123 via a fixing member (not shown). With this structure, the embedded busbar 150 can stably energize the fixed contact 123 of the relay 120.

[0155] At this time, if Figure 15 As shown in the enlarged view, the embedded bus 150 may include: a first extension portion 154, extending upward from one end of the main body portion 151 to a specified length; and a second extension portion 155, extending horizontally from the end of the first extension portion 154 to a specified length.

[0156] In the above case, the first fastening hole 152 may be formed to be located at the second extending portion 155 .

[0157] Thus, when the relay 120 is installed in the installation space 111, even if the upper surface of the fixed contact 123 and the upper surface of the second terminal connection portion 136 of the circuit board 130 have different heights from each other, a surface of the second extension portion 155 in which the first fastening hole 152 is formed can also make surface contact with the upper surface of the fixed contact 123 of the relay 120.

[0158] That is, one surface of the second extending portion 155 may be in close contact with the upper surface of the fixed contact 123 , and the end portion including the second fastening hole 153 may be in close contact with the second terminal connecting portion 136 .

[0159] With such a structure, even if the upper surface of the fixed contact 123 is located at a relatively higher position than the upper surface of the second terminal connection portion 136 , the embedded busbar 150 can be stably energized with the fixed contact 123 and the second terminal connection portion 136 of the relay 120 .

[0160] In the present invention, when a plurality of relays 120 are provided, the embedded busbars 150 may be provided in a number corresponding to the total number of the relays 120 .

[0161] As an example, when three installation spaces 111 are formed in the lower shell 110 in a manner divided from each other along the length direction of the lower shell 110, and three relays 120 are separately installed in the three installation spaces 111, six embedded busbars 150a, 150b, 150c, 150d, 150e, and 150f can be embedded in the upper shell 140.

[0162] In the case described above, the six embedded busbars 150a, 150b, 150c, 150d, 150e, and 150f can be connected to the second terminal connection portion 136 and the fixed contact 123 as a whole, but can also be configured so that one end of a part of the embedded busbars 150b and 150f is connected to the fixed contact 123 and not connected to the second terminal connection portion 136.

[0163] Therefore, in the battery power disconnect device 100 according to one embodiment of the present invention, when the upper shell 140 and the lower shell 110 are combined with each other in a state where the relay 120 and the circuit board 130 are respectively installed in the installation space 111 and the storage space 112, the relay 120 can be energized with the external connection terminal 131 through the combination of the above-mentioned coil terminal 122 and the first terminal connection part 132, and electrically connected with the second terminal connection part 136 of the circuit board 130 through the fixed contact 123 and the embedded bus 150.

[0164] Thus, in the battery power disconnect device 100 according to an embodiment of the present invention, even if the relay 120 and the circuit board 130 are respectively installed in the installation space 111 and the storage space 112, when the upper shell 140 and the lower shell 110 are combined with each other, the fixed contacts 123 of the relay 120 and the circuit board 130 can be energized by the embedded bus 150 embedded in the upper shell 140, thereby reducing or minimizing the wiring work for electrically connecting the fixed contacts 123 of the relay 120 and the circuit board 130.

[0165] In addition, as described above, when the circuit board 130 is configured as a pre-charging circuit integrated PCB including a pre-charging circuit, the relay 120 installed in the installation space 111 can be simply connected to the pre-charging circuit included in the circuit board 130 through the embedded bus 150 embedded in the upper shell 140.

[0166] In the above description, although the case where the second terminal connection portion 136 is electrically connected to the pre-charging circuit included in the circuit board 130 is taken as an example, the present invention is not limited to this. The second terminal connection portion 136 can also be electrically connected to other electrical components or other circuits installed on the circuit board 130.

[0167] In addition, the battery power disconnect device 100 according to an embodiment of the present invention may include permanent magnets 161 and 162 , which are used to control arcs that may be generated when the relay 120 installed in the installation space 111 is in operation.

[0168] The permanent magnets 161 and 162 described above can be configured so that even if the plurality of relays 120a, 120b, and 120c are individually installed in the installation space 111, arcs that may be generated in each of the plurality of relays 120a, 120b, and 120c can be individually controlled.

[0169] For this reason, Figure 13 and Figure 16As shown, the upper shell 140 may include a plurality of upper mounting spaces 142 formed at positions corresponding one-to-one to the plurality of relays 120a, 120b, and 120c, respectively, and the permanent magnets 161 and 162 may be respectively arranged in the plurality of upper mounting spaces 142 so as to be able to control the arc generated from the relay 120.

[0170] In the case described above, each of the multiple relays 120a, 120b, 120c respectively and individually installed in the installation space 111 can be installed in the installation space 111 of the lower shell 110 so that the fixed contact 123 is located at the upper part of the main body 121, and the fixed contact 123 can be configured to be located in the upper installation space 142.

[0171] Furthermore, the permanent magnets 161 and 162 may be arranged along the inner circumferential surface of the upper mounting space 142 and disposed in the upper mounting space 142 so as to surround the main body 121 of the relay disposed in the upper mounting space 142 .

[0172] As an example, the permanent magnets 161 and 162 can be arranged in the upper mounting space 142 in a manner that surrounds the arc chamber portion 121a forming the upper part of the main body 121, so that they can accommodate the fixed contact 123 and the movable contact (not shown) in the main body 121 inside.

[0173] As a non-limiting example, Figure 16 As shown, the permanent magnets 161 and 162 may include a first permanent magnet 161 and a second permanent magnet 162 , and the first permanent magnet 161 and the second permanent magnet 162 may be coupled to the upper housing 140 in an opposing manner in the upper mounting space 142 .

[0174] At this time, the permanent magnets 161 and 162 may be detachably coupled to the upper housing 140 via a permanent magnet holder 170 .

[0175] That is, the battery power disconnect device 100 according to an embodiment of the present invention may further include a permanent magnet holder 170 detachably coupled to the upper housing 140 , and the permanent magnets 161 , 162 may be detachably coupled to the upper housing 140 through the permanent magnet holder 170 .

[0176] As an example, the permanent magnet retainer 170 may include a first retainer 170a coupled to the first permanent magnet 161 and a second retainer 170b coupled to the second permanent magnet 162, and the first retainer 170a and the second retainer 170b may each include: a retainer body 171, to which the permanent magnets 161 and 162 are detachably coupled; and a hook portion 172, which is formed to protrude outward from the end of the retainer body 171 by a specified length.

[0177] Also, the upper housing 140 may include a coupling groove 143 formed to be located in the upper mounting space 142 .

[0178] Thus, each of the first retainer 170 a and the second retainer 170 b may be detachably coupled to the upper housing 140 in the upper mounting space 142 via the hook portion 172 and the coupling groove 143 .

[0179] In the case described above, if Figure 16 As shown, the first retainer 170 a and the second retainer 170 b may be respectively coupled to the upper housing 140 so that the first permanent magnet 161 and the second permanent magnet 162 are opposite to each other in the upper mounting space 142 .

[0180] Also, the first permanent magnet 161 and the second permanent magnet 162 facing each other in the upper installation space 142 may be arranged such that different polarities thereof face each other.

[0181] Through such a structure, even if an arc is generated when the relay 120 is working, the first permanent magnet 161 and the second permanent magnet 162 can form an electromagnetic force through the magnetic field together with the current flowing through the fixed contact 123 and the movable contact, so that the arc is quickly stretched, thereby preventing damage to components caused by the arc.

[0182] At this time, the permanent magnets 161 and 162 can be detachably coupled to the permanent magnet holder 170 .

[0183] As an example, Figure 17 As shown, each of the first retainer 170 a and the second retainer 170 b may include a plurality of support ribs 173 . The plurality of support ribs 173 are formed to protrude from the retainer body 171 so as to support the outer edges of the permanent magnets 161 and 162 .

[0184] Thus, the outer edges of the permanent magnets 161 and 162 are supported by the plurality of support ribs 173 , and can be detachably coupled to one surface of the holder body 171 .

[0185] At this time, the first permanent magnet 161 and the second permanent magnet 162 may be provided in one each, or may be configured to form a Halbach array in multiple numbers.

[0186] As an example, the first permanent magnet 161 may be configured as three permanent magnets 161a, 161b, and 161c arranged adjacent to each other along one direction. The three permanent magnets 161a, 161b, and 161c may be arranged to form a Halbach array.

[0187] Likewise, the second permanent magnet 162 may be configured as three permanent magnets 162a, 162b, and 162c arranged adjacent to each other along a direction. The three permanent magnets 162a, 162b, and 162c may be arranged to form a Halbach array.

[0188] Although the drawings and descriptions illustrate and illustrate the case where the permanent magnet holder 170 includes a first holder 170a and a second holder 170b, the present invention is not limited thereto. The permanent magnet holder 170 can also be constructed in a form in which the first holder 170a and the second holder 170b are connected into one.

[0189] That is, the permanent magnet holder 170 may be configured as a single component having a closed loop cross section, and the first permanent magnet 161 and the second permanent magnet 162 may be detachably coupled to the single component permanent magnet holder.

[0190] Furthermore, as described above, when the lower shell 110 includes multiple installation spaces 111a, 111b, and 111c, the multiple relays 120a, 120b, and 120c can be separately installed in the multiple installation spaces 111a, 111b, and 111c, respectively, and the multiple upper installation spaces 142 can be formed at positions corresponding one-to-one to the multiple installation spaces 111a, 111b, and 111c, respectively.

[0191] In the above case, the permanent magnets 161 and 162 may be respectively disposed in the plurality of upper installation spaces 142 so as to control the arc generated from the relay 120 .

[0192] Thus, even if the plurality of relays 120a, 120b, 120c are individually installed in the plurality of installation spaces 111a, 111b, 111c, respectively, the permanent magnets 161, 162 can individually control arcs that may be generated in each of the plurality of relays 120a, 120b, 120c.

[0193] Although the embodiments of the present invention have been described, the technical concept of the present invention is not limited to the embodiments disclosed in this specification. Those skilled in the art who understand the technical concept of the present invention can easily propose other embodiments within the scope of the same technical concept by adding, changing, deleting, or appending constituent elements, but this is also considered to fall within the scope of the technical concept of the present invention.

Claims

1. A battery power disconnect device, characterized in that: include: The lower housing includes an installation space formed in an upper open manner and a storage space formed in an upper open manner; a relay mounted to the installation space through the opened upper portion of the installation space, comprising a fixed contact configured to protrude from the main body to the upper portion by a predetermined height and be exposed to the outside; a circuit board mounted in the receiving space through the open upper portion of the receiving space; an upper case coupled to the lower case so as to cover the opened upper portion of the installation space and the opened upper portion of the storage space; and The embedded busbar is embedded in the upper housing so that the fixed contacts of the relay arranged in the installation space and the circuit board installed in the storage space can be electrically connected when the upper housing and the lower housing are combined with each other.

2. The battery power disconnect device according to claim 1, characterized in that The relay comprises: The coil terminal protrudes outward from the main body by a specified length; The circuit board comprises: External connection terminals for electrical connection to the outside, and A first terminal connecting portion, into which one end portion of the coil terminal can be inserted and coupled.

3. The battery power disconnect device according to claim 2, characterized in that: The terminal connection portion is electrically connected to the external connection terminal via a wiring pattern formed on the circuit board. The relay is electrically connected to the external connection terminal and physically coupled to the circuit board through the physical coupling of the coil terminal and the first terminal connection portion.

4. The battery power disconnect device according to claim 1, wherein: The circuit board is a pre-charging circuit integrated printed circuit board including a pre-charging circuit and a second terminal connection portion, wherein the pre-charging circuit is composed of a semiconductor switch and a pre-charging resistor, and the second terminal connection portion is configured to be electrically connected to the pre-charging circuit. In a state in which the upper case and the lower case are coupled to each other, the embedded bus bar electrically connects the fixed contact of the relay and the second terminal connection portion to each other.

5. The battery power disconnect device according to claim 1, wherein: The buried busbar comprises: The main body is composed of a rod-shaped member with a predetermined length. a first fastening hole formed on one end side of the main body portion, and a second fastening hole formed on the other end side of the main body portion; The embedded busbar is embedded in the upper case such that the first fastening hole and the second fastening hole are exposed to the outside.

6. The battery power disconnect device according to claim 5, characterized in that: The buried busbar further comprises: a first extension portion extending upward from one end portion of the main body portion by a predetermined length, and a second extending portion extending horizontally from an end portion of the first extending portion to a predetermined length and having the first fastening hole formed therein; One surface of the second extending portion is in surface contact with the fixed contact of the relay.

7. The battery power disconnect device according to claim 5, characterized in that The first fastening hole is arranged at a position corresponding to the installation space when the upper housing and the lower housing are coupled to each other, and is coupled to the fixed contact of the relay through a fixing member. The second fastening hole is arranged at a position corresponding to the receiving space when the upper housing and the lower housing are coupled to each other, and is coupled to a second terminal connection portion provided on the circuit board through a fixing member.

8. The battery power disconnect device according to claim 1, wherein: The circuit board is installed in the receiving space and is arranged perpendicular to the bottom surface of the receiving space.

9. The battery power disconnect device according to claim 1, wherein: The installation space includes a plurality of installation spaces arranged along the length direction of the lower housing, that is, the first axis direction, and formed to be divided from each other. The receiving space is separated from the plurality of installation spaces by a partition wall and is formed to be adjacent to the plurality of installation spaces along the width direction, ie, the second axis direction. A plurality of relays are individually installed in the plurality of installation spaces and are electrically connected to the circuit board through the embedded busbar.

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